Carbothermic reduction with parallel heat sources
March 7, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3661561 3758289 Carbothermic reduction process Method of carbothermically producing aluminum-silicon alloys Process and an apparatus for producing silicon carbide consisting mainly of beta-type crystal Aluminum purification system Process for the preparation of silicon or ferrosilicon Energy efficient production of aluminum by carbothermic reduction of alumina Carbothermic reduction furnace Patent #: 4334917 InventorsAssigneeApplicationNo. 06/472680 filed on 03/07/1983US Classes:75/10.21, Producing or treating Aluminum(Al) or Aluminum alloy75/10.27Carbothermic reduction of Aluminum(Al) compoundExaminersPrimary: Rosenberg, Peter D.Attorney, Agent or FirmInternational ClassesC22B 21/02 (20060101)C22B 21/00 (20060101) AbstractDisclosed are apparatus and method of carbothermic direct reduction for producing an aluminum alloy from a raw material mix including aluminum oxide, silicon oxide, and carbon wherein parallel heat sources are provided by a combustion heat source and by an electrical heat source at essentially the same position in the reactor, e.g., such as at the same horizontal level in the path of a gravity-fed moving bed in a vertical reactor. The present invention includes providing at least 79% of the heat energy required in the process by the electrical heat source.Other References
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